Light conductor device

Abstract

A light conductor is non-opaque and has a bottom surface and a top surface, which are distant from each other in a height direction. A display device has a screen configured to create an indication. The bottom surface of the light conductor is faced to the display device and to elevate the indication to show the indication on the top surface of the light conductor.

What is claimed is: 
     
         1 . A light conductor device comprising:
 a light conductor being non-opaque and having a bottom surface and a top surface, which are distant from each other; and   a display device having a screen configured to show an indication on the screen, wherein   the bottom surface of the light conductor is faced to the screen, and   the light conductor is configured to elevate the indication on the screen therethrough to show the indication on the top surface.   
     
     
         2 . The light conductor device of  claim 1 , further comprising:
 a knob being hollow and accommodating the light conductor, wherein   the knob has a top wall having a window, and   the window is faced to the top surface of the light conductor.   
     
     
         3 . The light conductor device of  claim 2 , wherein
 the top wall of the knob is in a circular shape, and   the window opens in a circumferential direction in an angular range.   
     
     
         4 . The light conductor device of  claim 1 , wherein
 the top surface and the bottom surface are in parallel with each other.   
     
     
         5 . The light conductor device of  claim 2 , further comprising:
 a bezel configured to receive the light conductor and to support the knob.   
     
     
         6 . The light conductor device of  claim 5 , wherein
 the bezel and the display device are affixed to a base plate and supported by the base plate.   
     
     
         7 . The light conductor device of  claim 2 , further comprising:
 a controller configured to control the display device, wherein   the controller is configured to modify the indication according to a rotary position of the knob.   
     
     
         8 . The light conductor device of  claim 7 , wherein
 the controller is configured to cause the display device to indicate a numeral symbol according to the rotary position of the knob.   
     
     
         9 . The light conductor device of  claim 8 , wherein
 the controller is configured to cause the display device to indicate a first numeral when the knob is at a first rotary position and to indicate a second numeral, which is different from the first numeral, when the knob is rotated to the first rotary position again.   
     
     
         10 . The light conductor device of  claim 8 , wherein
 the controller is configured to cause the display device to indicate a symbol, which slowly follows the window when the knob is rotated.   
     
     
         11 . The light conductor device of  claim 8 , wherein
 the controller is configured to cause the display device to indicate a symbol, which instructs a user of a direction in which the knob is to be rotated.   
     
     
         12 . The light conductor device of  claim 8 , wherein
 the controller is configured to cause the display device to narrow the window in at least one of a circumferential direction and a radial direction.   
     
     
         13 . The light conductor device of  claim 5 , further comprising:
 a sensor equipped to the bezel and configured to detect a rotary position of the knob; and   a bracket supporting the bezel, wherein   the bracket includes an electric wire to conduct a detection signal from the sensor.   
     
     
         14 . The light conductor device of  claim 1 , further comprising:
 the light conductor is in an arch shape,   the display device is configured to indicate a meter in a circular shape, and   the light conductor surrounds the meter.   
     
     
         15 . The light conductor device of  claim 14 , wherein
 the top surface is at an angle relative to the bottom surface.